There are certain fundamental challenges in representing teacher knowledge around technology (Fenstermacher, 1994), particularly as it develops in “learning-by-design” seminars. The first challenge is that any representation of teacher knowledge needs to reflect its collaborative, co-constructed nature. Furthermore, TPCK develops by doing and through the dialogues and interactions between the participants in design teams as they grapple with issues surrounding content, pedagogy and technology. Consequently, knowledge in such settings is not static or fixed. In our previous work (Koehler, Mishra, Hershey, & Peruski, 2004; Mishra & Koehler in press a, b) we offered some representations of teacher knowledge around technology. However there were often based on detailed and time-intensive qualitative research. In this article we extend our work by developing a survey questionnaire that allows us to observe both the process and product of learning by design seminars. We see this survey instrument as being a useful tool for future research on the development of TPCK as well as allowing us to develop a better understanding of how design teams function.